LexITanon in English
Pseudonymise and redact German legal documents - without them leaving your computer
LexITanon finds names, addresses, dates of birth, case numbers, bank details and other personal data in German court decisions, orders and briefs, and replaces them with placeholders such as [NAME] or with black bars. It runs entirely on your own computer or server - no cloud service, no external AI interface.
The program, its manual and the rest of this website are in German. The REST API is documented in English.
What it does
- Its own AI recognition model, trained for German court decisions, plus fixed rules for IBANs, dates, tax IDs, phone numbers and e-mail addresses. The model only marks words; it does not write or invent text and does not learn from your documents.
- Pseudonymisation or redaction: placeholders such as
[NAME], optionally numbered ([NAME_1],[FIRMA_2], the same person keeps the same number), or black bars. - Courts, statutes, amounts and cited decisions are kept; dates can be replaced, kept, reduced to month and year, or all shifted by the same number of weeks.
- PDF with a text layer or plain text in, a new PDF or text out - you review every replacement side by side with the original before you share the result.
Why it matters for AI
Law firms want to use ChatGPT, Copilot, Claude and similar services, but professional secrecy (section 203 German Criminal Code, sections 43a and 43e of the Federal Lawyers' Act) and the GDPR limit what may be passed to a service provider. Pseudonymising a document locally before it is sent means the AI service only sees placeholders. With LexITanon Server, practice-management software, document management systems and AI applications can do this automatically through the REST API.
Every result should still be reviewed: a person may remain recognisable from the context. This page is a general overview and not legal advice.
Versions
LexITanon Desktop
One workstation: Windows 10/11, macOS 13 or later (Apple chip), Linux.
from 7 € per user and month, billed yearly, plus VAT.
LexITanon Server
The whole firm: browser access from all workstations, documents in parallel, REST API with OpenAPI description, custom rules for your own file numbers. Linux or Windows Server.
from 195 € per instance and month, billed yearly, plus VAT.
LexITanon Mobile
Single documents on iPhone, iPad and Android, processed on the device.
In-app subscription, or free for one device with each Desktop or Server licence.
Comparison and system requirements (German) · Prices (German)
Privacy by design
Documents are processed only in memory on the machine where LexITanon runs. Documents, file names, texts and findings are never transmitted - not even to us. The only internet connection is the licence check (Desktop daily, Server hourly), which sends the licence key, the program version, a hardware checksum and usage counts.
NOCIP Gold · No. G-2026-0001
Local AI verified: LexITanon Desktop for Linux, version 0.5.0
For developers and integrators
- REST API guide (PDF, English) - text and file endpoints, options, custom rules, examples in curl, PowerShell and Python.
- Python client and examples on GitLab - standard library only.
- lexitanon-mcp - an MCP server for AI assistants and agents: a file is pseudonymised on your LexITanon server, and the pseudonymised result then goes to the AI service of your choice. No automatic recognition is complete; review the results.
- llms.txt - a plain-text summary for AI assistants.
- Contact form - questions in German or English.
Try it in your browser
The demo (German interface) pseudonymises texts and PDFs with up to 20 findings - no sign-up.